Phenine nanotube

A phenine nanotube is a derivation or variant of short carbon nanotubes first reported in 2019.[1] Similar to carbon nanotubes, they possess a cylindrical structure, with they key difference being the replacement of trigonal sp2-hybridized carbon atoms with 1,3,5-trisubstituted benzene (phenine) units.

They have a precise cylindrical structure with pores and a length index of 7. They have been synthesized by a 9-step process starting with 1,3-dibromobenzene, which involves several borylation and coupling steps.[2] A variant that is doped with nitrogen has also been synthesized, and has been reported to display properties similar to an organic n-type semiconductor.[3]

Some advantages that phenine nanotubes possess over carbon nanotubes include a greater length and more flexible sidewalls, and greater porosity. However, they also possess significantly lower values of the Young's modulus and tensile strength.[4]

## See also

* Carbon nanotube

## References

1. ↑ "New nanocarbon hits the scene". physicsworld.com. January 11, 2019. https://physicsworld.com/a/new-nanocarbon-hits-the-scene.
2. ↑ Sun, Zhe; Ikemoto, Koki; Fukunaga, Toshiya M.; Koretsune, Takashi; Arita, Ryotaro; Sato, Sota; Isobe, Hiroyuki (2019-01-11). "Finite phenine nanotubes with periodic vacancy defects" (in en). Science 363 (6423): 151–155. doi:10.1126/science.aau5441. ISSN 0036-8075. https://www.science.org/doi/10.1126/science.aau5441.
3. ↑ Walsh, Joshua C.; Bodwell, Graham J. (2020-07-28). "The phenine concept delivers a nitrogen-doped nanotube and evokes infinite possibilities" (in en). Communications Chemistry 3 (1). doi:10.1038/s42004-020-00348-3. ISSN 2399-3669. PMID 36703313. PMC 9814705. https://www.nature.com/articles/s42004-020-00348-3.
4. ↑ Faria, Bruno; Silvestre, Nuno (October 2022). "Mechanical properties of phenine nanotubes" (in en). Extreme Mechanics Letters 56. doi:10.1016/j.eml.2022.101893. https://linkinghub.elsevier.com/retrieve/pii/S2352431622001699.

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